Sofa



FIG. 1 is a front right perspective view of the sofa showing the new design;

FIG. 2 is a front left perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left view thereof;

FIG. 8 is a right view thereof;

FIG. 9 is a front right perspective view thereof in a slightly inclined position.

FIG. 10 is a front left perspective view thereof the slightly inclined position.

FIG. 11 is a front right perspective view thereof in a higher inclined position.

FIG. 12 is a front left perspective view thereof in the higher inclined position.

FIG. 13 is a front right perspective view thereof in a still higher inclined position; and,

FIG. 14 is a front left perspective view thereof in the still higher inclined position. 

What is claimed is the ornamental design for a sofa, as shown and described. 